saab key replacement cost G28 made since 1994 feature an immobilizer mechanism made up of coded keys. The addition of a key requires a new transponder and special programming. This is usually done at the dealer, using a specially-designed Tech2 diagnostic tool.
The problem is that this can be quite costly. Always keep an extra set of keys on hand.
Transponder key
The transponder can be described as a key equipped with an electronic chip. This chip sends out a signal when the key is put in the ignition. The car will then check the signal to determine whether it matches the one in the key. If the signals match then the car will be able to unlock and start. This is a great way to safeguard your car from theft.
Transponder keys are a popular feature in automobiles, but it is important to know that they are not as secure as classic keys made of metal. While the metal component of a conventional key can be cut and copied the transponder is protected by an electronic chip. The chip has a unique code that is embedded into the car's computer to identify it.
When a Saab key fob is used, the car recognizes it and allows it to turn on. However, it will only do this if the key fob has a non-modified chip that has been programmed to match the original. In the absence of that, the car will reject the key and not start.
It is vital to have a spare Saab key. This is particularly important for those who live in a rural area that is home to numerous car thieves. You can get a brand new key for your Saab by visiting the dealership without paying high prices. In the majority of cases, you can have a new key made on-the-spot at a fraction of the cost you would pay at a dealer.
Key for Wired
Saab cars are typically delivered with two keys. If you own only one, you need to purchase an additional key as quickly as you can. This is because if it's lost and the car is damaged, it will require a new CIM and the locking cylinders replaced. This can be costly particularly if you are buying a second-hand car.
The next step is to wire the row and column wires to the microcontroller. This is the most difficult part of the project and will require a good amount of soldering. It's not a common way to do it, but you need to plan how to connect and solder each column and row. For this keyboard, there are five rows and 17 columns. So there will be 22 microcontroller pins and wires to connect.
Once the rows and columns are soldered, it's time to connect them to the key switches. To do this, put an inverter over each key switch pin and then solder it. This will protect the key switch pins from current and stop them from being shorted. A diode can only allow the flow of current to be in one direction, and has a the black band as a visual indicator that indicates the direction in which current will flow.
Sanabria states that a number of the tools that are sold in auto parts stores, including the Autel MaxiIM IM608PRO and the IM508, can help shoppers or DIY users to program replacement keys and restore data from the immobilizer. The tools connect to the OBD port and guide the user through the process, making it easier than replacing the computer inside the vehicle.
Jump-starting the battery
Most people keep a few sets of jumper cables in their trunks in case of emergency however, jumping a battery on newer cars might not be the best idea. These cars have a variety of digital and electronic devices that communicate with one another. A surge in voltage when a battery is hooked up to another could cause damage to these components, rendering your vehicle undriveable.

Start the working vehicle and allow it to run for approximately two minutes before you connect the cables to the battery that is not working. Attach the red clip to the positive terminal on the good battery (it will have "POS" or "+" on it). Attach the other end of the black cable to a clean, unpainted metal surface beneath the damaged vehicle's hood. An engine block is an excellent choice. The black cable should not be connected to the negative terminal of the dead battery. This could create a spark, which would ignite gasoline in the engine compartment.
Once the cables are connected the vehicle that has been disabled and allow it to run for around five minutes before you disconnect them in reverse order. The battery in your Saab 9-3 will be recharged as you drive. It may take a while it to recharge again. You should purchase another key fob as soon as possible. Replacing the original one that works requires the installation and programming of a brand new computer chip.
Replacement case
Saab owners usually have only one car key, and if that is lost, they'll be charged. It's expensive to buy a key and requires replacing the CIM or TWICE for older models. In the event of theft or any other catastrophe, it is best to have an extra key. Even even if the key is "new", it will not function.
The majority of locksmiths won't be able to help with a single working key and the dealer will charge high fees to replace the computer in your car for a replacement. We can reset and reprogram the EEEPROM of your computer for it to accept a new key without the need to replace the entire system. This can help you save money. It's more affordable rather than wait until you lose the sole key.